Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!

Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.

We do enough custom manifolds for other set-ups, yet I haven't done one for my own daily driver just yet. This will be going in my Forester... it will have a V-band outlet which will mate up with the rest of the custom exhaust, which will follow shortly.
Designed first in SolidWorks, and laser-cut so everything fits up perfectly. Debting on whethere to Electro-polish it or leaves the welds raw... we'll see how it looks once it's finished.

This picture isnt the best, but the old manifold collected well in front of the subframe, and then dips down below it. The new manifold collects further back, so there isn't room to dip down. Instead, the new manifold is designed to put the collector outlet at the height it needs to be at to clear under the subframe. So although the initial height of the runners is a bit more, the new manifold doesn't give up any clearance over the old one.

It should be finished up in the next day or two, then onto the rest of the exhaust. The muffler openings in the stock Forester rear bumper will be filled with our own 4" mufflers, with turn-down pie-cut tips just like our downpipes:

Wow you really enjoy using argon. I wish I had half the skills of yours.
I have a question though. Why do you prefer pie cuts to mandrel bends? I've seen your work on other sites and noticed that you prefer the pie cuts. Is it to show off the welding skill? Also, are you using Solar Flux on some parts? It doesn't look like it to me, as the welds are pretty (and without the crap floating to the top) or do you only purge some of the welds? I would assume with that many welds, you must eat through argon pretty fast if everything is purged.

Just curious.
I tried using Solar Flux on a downpipe, and noticed that the residue can float up and not just on the inside of the pipe. Or am I doing it wrong?

Wow you really enjoy using argon. I wish I had half the skills of yours.
I have a question though. Why do you prefer pie cuts to mandrel bends? I've seen your work on other sites and noticed that you prefer the pie cuts. Is it to show off the welding skill? Also, are you using Solar Flux on some parts? It doesn't look like it to me, as the welds are pretty (and without the crap floating to the top) or do you only purge some of the welds? I would assume with that many welds, you must eat through argon pretty fast if everything is purged.

Just curious.
I tried using Solar Flux on a downpipe, and noticed that the residue can float up and not just on the inside of the pipe. Or am I doing it wrong?

Awesome work

We did a few parts using pie-cuts last year simply for the fun of it, as we've always liked the way its looked. After that, customers started asking for it. It's kind of become our trademark now.
One advantage the pie-cuts do have is they make fitting up complex bends much easier than cutting bends down to the correct angle, as they're a known angle and can be indexed as needed.

We haven't used Solar Flux, just alot of brushing and prepping to keep everything clean.

Quote:

Originally Posted by indytruckboy

No slip fit between banks? Aren't you worried about cracking?

One of the first things I did with the old manifold is weld up the slip-fit connection, as it was the source of an annoying buzz at certain rpm. I've taken the manifold on and off numerous times and there hasn't been any warping. Given the costruction of the old manifold (chinese garbage) vs the new manifold, it will outast the car and then some.

Thank you for the kind words.
Yes, welding for hours straight will result in sun burn! We typically wear full sleeves... but no gloves. Hands usually stay fine, although I do have a tendency to always grab scorching hot parts. You think you'd learn...